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How is it possible for one group to score higher than the other group and yet we conclude there is no reliable difference between the groups?
Wiki User
∙ 8y ago
Given any two groups there will usually be random variations in their scores. A proper statistical test is designed to assess whether the observed difference is likely to be a result of such random variation or if it due to a genuine - reliable - difference between the groups.
Wiki User
∙ 8y ago
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